[KERNEL] 2.6.32.61-nAa-jb-06 [6/7/2013] [NEW WIFI/USB] - Unified kernel+CWM Recovery

Before unlocking your bootloader, read this thread
If you brick your device, you are the sole responsible.


Preface:

• Read through this post. Don't rush into flashing. Be sure you understand the process before you start or you risk damaging your device
• This is a custom 2.6.32 kernel developed for Android Jellybean 4.x. However, as of nAa-06 Android gingerbread is also supported. This kernel only works for shakira, a.k.a. X8,W8
• Do NOT try this kernel on other Android versions or phones - you are totally unsupported
• This kernel uses a custom mtd partitioning with larger /system partition to hold the extra JB calories. If you are moving from another custom kernel, EXCEPT 2.6.29-nAa-jb to this one, you MUST first format /system /data and /cache via the embedded CWM recovery
  [*] If you want to flash another kernel after having flashed this one, you MUST first format /system /data and /cache via the embedded CWM recovery

Features:

• Based on SEMC 2011 ICS sources, re-based on Linux kernel 2.6.32.61
• Built with arm-eabi-4.4.3 toolchain
• CWM-v6.0.2.8
  [*] Idiot-proof feature: will boot into recovery if an unsupported or no android version is found
• Custom mtd partitioning scheme suitable for JB
• Modular recovery flashing support
• Much more RAM than stock for improved multitasking experience (shakira: 186MB, robyn/mimmi: 187MB)
• Patched to latest 2.6.32.61 release
• kgsl: SEMC 2011
• ARM: many backported fixes and optimizations from CAF 3.x
• Netfilter: many backported fixes and optimizations from CAF 3.x.
• net/iptables: Fully working networking and iptables support. Fully working traffic control via data limits menu of JB
• Backported tiny-rcu
• Superior AHB overclocking - improved responsiveness and performance. 'Buttery-smooth' experience
• improvements: memcpy, kmalloc, jhash, sha1, scheduler, optimized CRC32, LZO, vmalloc, pm_suspend
• Two-way call recording
• binder, lowmemorykiller fixes backported from CAF 3.x
• WEXT tiwlan
• pmem: backported from CAF 2.6.35
• modular undervolting
• tripple buffering support
• Supported IO Schedulers: NOOP, BFQ, AS, DEADLINE, CFQ, VR, SIO
• net: Stochastic Fair Blue scheduler
• ZRAM + google snappy compression backported from CAF 3.x
• ZCACHE backported from CAF 3.x
• Cleancache backported from CAF 3.x
• Kernel compression: LZO for best kernel booting times
• Makefile: optimization flags
• dcache: vfs_cache_pressure -> 25
• Proportional Rate Reduction for TCP
• fsync enable/disable toggle at: /sys/module/sync/parameters/fsync_enabled (enabled by default)
• Many many more fixes and improvements available @ github

Defaults:

• Scheduler: CFS
• RCU: Tiny RCU
• Memory Manager: SLQB
• IO scheduler: Deadline
• CPU governor: smartassV2
• CPU_FREQ_MAX=604800
• CPU_FREQ_MIN=245760

FAQ:
If you have any issues, please read the FAQ thread first: TODO

Requirements:

• Unlocked bootloader --> http://xdaforums.com/showthread.php?t=1254225
• MiniCM10 (latest nightly), install this kernel first, format /system, /data and /cache, then install MiniCM10. I don't support other ROMs - MiniCM10 is the official - unofficial CM ROM for this device
• Flashtool tested to be working with your phone, e.g. from here: http://www.multiupload.com/GYL7A7XQBT Original flashtool thread: http://xdaforums.com/showthread.php?t=920746

Install:

• Backup
• Unlock your bootloader as described here: http://xdaforums.com/showpost.php?p=17384177&postcount=3 or here: http://xdaforums.com/showthread.php?t=1254225
• Download the latest kernel ftf file from here and move it to Flashtool\firmwares so that Flashtool can pick it up
• Flash the kernel via Flashtool
• Reboot and you should see the coolest kernel boot animation
  [*] (First time only) Get into recovery and format /system /cache and /data manually

Uninstall:

• Flash back to stock using SEUS
  
  OR
  
  [*] Format /system /data and /cache via CWM and THEN flash another kernel via Flashtool
  Any other way is completely unsupported, don't ask how to unbrick if you can't read the instructions

Notes:

Dualtouch (for synaptics):
By default dual touch is disabled for improved touch accuracy and avoidance of the 'ghost touch' side-effect.

• If you want to enable the fake DT by andrej456, you have to insert the following line in the /system/etc/hw_config.sh file:
  

  echo "1" > /sys/module/synaptics_i2c_rmi4/parameters/cfg_dt

  Click to expand...

  Click to collapse

• If you want to enable the fake DT by dx, you have to insert the following line in the /system/etc/hw_config.sh file:
  

  insmod /system/lib/modules/synaptics_i2c_rmi4_dt.ko

  Click to expand...

  Click to collapse

Dualtouch (for cypress):
Cypress supports dualtouch, so this is enabled by default

Sources:

• The linux kernel is GPL'ed, everyone who does modifications should make them publicly available.
• Making a kernel thread for posting a difference in the ramdisk or for a so-called 'improved governor / io scheduler' is legal, but plain stupid, disrespectful and wasteful
• I accept patches any way possible. Basically I only read pms if they contain some suggestion or patch Credits go to the author obviously

https://github.com/nobodyAtall/msm7x27-2.6.32.x-nAa

Changelog:

nAa-06 (6/7/2013)
- Supported android versions: gingerbread, ICS (?) and JB
- Linux 2.6.32.61
- Various ramdisk improvements

nAa-05 (15/3/2013)
- new .32 usb drivers for ICS/JB mtp support
- built with linaro 4.7.3 toolchain
- bluetooth: new rfkill implementation
- Fixed msm_serial_hs_dma wakelock for mimmi
- cypress: fix touchscreen driver for shakira
- synaptics_rmi4: implement dt/nodt via module parameter (no more hijacking for no dt)
- new vibrator implementation - better feedback
- lz4 kernel + ramdisk compression - faster startup
- decompressor: Enable unaligned memory access for v6 and above
- enabled keychord
- ramdisk improvements for smaller ramdisk and faster booting
- mimmi: fixed keypad
- synaptics: disabled dt by default to avoid 'ghost touch' side-effect

nAa-04 (27/2/2012)
- Latest CWM-v6.0.2.8
- In-recovery charging
- Sideload flashing from CWM
- New wl12xx wifi drivers for improved performance and decreased power consumption
- SmartassH3 CPU Governor
- Built with arm-eabi-4.4.3 toolchain
- Significant ramdisk improvements - kernel won't stay on black screen on any bad flashing occassion - it will boot to recovery
- CONFIG_IP6_NF_IPTABLES
- CRT animation workaround for proper JB support

nAa-03 (16/2/2012)
- bootable with all CM-based android versions >=2.3
- built with linaro 4.7.3 toolchain
- offline charging
- kgsl 3.11 from CAF
- timed_gpio: backport from CAF
- android: persistent_ram/ram_console backport from CAF
- logger: backport from CAF
- genlock: backport from CAF
- sysfs VDD levels interface for configurable undervolting from userspace

nAa-02
- Based on SEMC 2011 ICS sources, re-based on Linux kernel 2.6.32.60
- Built with arm-eabi-4.4.3 toolchain
- CWM-Based Recovery 5.5.0.4
- Custom mtd partitioning scheme suitable for JB
- Modular recovery flashing support
- Much more RAM than stock for improved multitasking experience (shakira: 186MB, robyn/mimmi: 187MB)
- Patched to latest 2.6.32.60 release
- kgsl: SEMC 2011
- ARM: many backported fixes and optimizations from CAF 3.x
- Netfilter: many backported fixes and optimizations from CAF 3.x.
- net/iptables: Fully working networking and iptables support. Fully working traffic control via
- data limits menu of JB
- Backported tiny-rcu
- Superior AHB overclocking - improved responsiveness and performance. 'Buttery-smooth' experience
- improvements: memcpy, kmalloc, jhash, sha1, scheduler, optimized CRC32, LZO, vmalloc, pm_suspend
- Two-way call recording
- binder, lowmemorykiller fixes backported from CAF 3.x
- WEXT tiwlan
- pmem: backported from CAF 2.6.35
- modular undervolting
- tripple buffering support
- Supported IO Schedulers: NOOP, BFQ, AS, DEADLINE, CFQ, VR, SIO
- net: Stochastic Fair Blue scheduler
- ZRAM + google snappy compression backported from CAF 3.x
- ZCACHE backported from CAF 3.x
- Cleancache backported from CAF 3.x
- Kernel compression: LZO for best kernel booting times
- Makefile: optimization flags
- dcache: vfs_cache_pressure -> 25
- Proportional Rate Reduction for TCP
- fsync enable/disable toggle at: /sys/module/sync/parameters/fsync_enabled (enabled by default)
- Many many more fixes and improvements available @ github

Hello community,

I've decided to work on one more version of this kernel that will be supporting gb too.

-- nAa

VDD levels

From 03 onwards, I've ported the vddlevels functionality from msm7x30 so that we can variably change the voltage level of the frequency we want without the need for external modules.
The current voltage information is available at:

/sys/devices/system/cpu/cpu0/cpufreq/vdd_levels

Click to expand...

Click to collapse

E.g. the defaults after flashing the kernel should be:

root@android:/ # cat /sys/devices/system/cpu/cpu0/cpufreq/vdd_levels
122880: 3
245760: 4
320000: 5
480000: 6
604800: 7
614400: 7
633600: 7
652800: 7
672000: 7
691200: 7
710400: 7
729600: 7
748800: 7
768000: 7
787200: 7
806400: 7
825600: 7
844800: 7
864000: 7

Click to expand...

Click to collapse

To change for example the voltage level of the 122880 frequency, you could do:

echo '122880 0' > /sys/devices/system/cpu/cpu0/cpufreq/vdd_levels

Click to expand...

Click to collapse

If you cat this file again, you should see that the voltage level is picked up. The new voltage level is picked up when the CPU will scale to the particular frequency level.

The undervolting tickbox in the 'Performance Settings' of the latest MiniCM10 nightlies already uses the new interface. The values that are set there are the same ones as those passed by the old undervolting module:

root@android:/ # cat /sys/devices/system/cpu/cpu0/cpufreq/vdd_levels
122880: 0
245760: 2
320000: 3
480000: 5
604800: 6
614400: 7
633600: 7
652800: 7
672000: 7
691200: 7
710400: 7
729600: 7
748800: 7
768000: 7
787200: 7
806400: 7
825600: 7
844800: 7
864000: 7

Click to expand...

Click to collapse

Do I need undervolting?
You dont NEED undervolting. It can save though hours of some battery life during the day.

Overvolting?
Even though the interface allows you to overvolt, I don't suggest doing so. It will result to instabilities or crashes and is totally unsupported.

Performance?
Undervolting decreases the performance results - this is to be expected.


Performance comparison vs .29 kernel
+20%-30%



Bugs confirmed:

- Bluetooth ADSP

Hello community,

nAa-06 is released today. The changelog list is short, but significant.

2.6.32.61-nAa-06:
- Supported android versions: gingerbread, ICS (not fully tested) and JB
- Linux 2.6.32.61
- Various ramdisk improvements

For gingerbread, please flash it with MiniCM7-2.2.2 since some rom changes are also needed.

Enjoy!

-- nAa